Scientists from the Global Challenges Foundation and the Future of Humanity Institute have created a list of the 12 most likely ways the world will end. CNN's Richard Roth explains why he'll be hiding in his office until then.

Two UK Royal Air Force jets intercepted a pair of Russian aircraft flying near British airspace this week, the British Defence Ministry said Thursday, marking the latest in what NATO has said is an increase in Russian military flights near alliance members' territory.